Force-Bias Trial Move4. Comments

• Necessary to compute force both before and after move

• From definition of force

  • l = 1/2 makes argument of exponent nearly zero
  • l = 0 reduces to unbiased case

• Force-bias makes Monte Carlo more like molecular dynamics

  • example of hybrid MC/MD method

• Improvement in convergence by factor or 2-3 observed

  • worth the effort?

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